CN105922588B

CN105922588B - Swinging mounting printhead

Info

Publication number: CN105922588B
Application number: CN201610339533.1A
Authority: CN
Inventors: 关雷; 钟正根; 史子木
Original assignee: Zhejiang Industry and Trade Vocational College
Current assignee: Zhejiang Industry and Trade Vocational College
Priority date: 2016-05-19
Filing date: 2016-05-19
Publication date: 2018-05-15
Anticipated expiration: 2036-05-19
Also published as: CN105922588A

Abstract

The present invention relates to a kind of swinging mounting printhead, including extrusion device and cooling device, extrusion device includes extrusion stent, extrusion pipeline and heating arrangements, extrusion stent includes installing plate, installing plate is horizontally disposed with regular hexagon, and installing plate outer circumferential surface is provided with spaced mounting surface, and the shaft of the mounting surface and adjacent mounting surface is provided through on the mounting surface, each shaft is arranged in equilateral triangle, and shaft both ends rotate the stop collar for being provided with swing arm and swing arm being limited in shaft respectively.Using the above scheme, the present invention provides a kind of swinging mounting printhead being easily installed.

Description

Swinging mounting printhead

Technical field

The present invention relates to a kind of printing device, and in particular to a kind of swinging mounting printhead.

Background technology

3D printing head is also known as three-dimensional printer, is a kind of a kind of machine of accumulation manufacturing technology, i.e. RP technique, it Be one kind based on digital model file, with special wax material, powdery metal or plastics etc. can jointing material, pass through printing Jointing material from level to level come manufacture three-dimensional object, be widely used at this stage manufacture product.

Existing swinging mounting printhead includes mounting bracket, extrusion device, shift unit and processing platform, and shift unit is set Be placed in mounting bracket and drive extrusion device with respect to mounting bracket transversely, it is longitudinal and vertically movable, processing platform is arranged at mounting bracket And below extruder head, wherein, extrusion device includes extrusion stent, heating arrangements and extrusion pipeline, and extrusion pipeline is vertically set Extrusion stent is placed in, extrudes the extrusion passage for being provided with pipeline and passing through for linear printed material, heating arrangements are compassingly set at The lower end of pipeline is extruded, linear printed material enters extrusion passage from extrusion pipeline upper end and added when reaching extrusion lower end of duct Heat engine structure melts to glue, is continued by the linear printed material at rear outside extruding to extrusion pipeline, due to linear printed material Can be out of this gap countercurrently, in counter-current process there are gap, the printed material of partial melting jelly between extrusion passage The longer waste material layer around linear printed material is gradually cooled into, which enters extrusion the linear of passage with rear and beat Print material and produce the normal charging of friction obstruction；And when using wind turbine cooling printed material, unidirectional airflow influence discharge port Accurate discharging, influences machining accuracy;Secondly, in installation needs, progressively extrusion device is installed on shift unit to traditional printhead On installing plate, installation effectiveness is reduced.

The content of the invention

In view of the deficiencies of the prior art, the present invention intends to provide a kind of swinging mounting printing being easily installed Head.

To achieve the above object, the present invention provides following technical solution：Including extrusion device, the extrusion device bag Extrusion stent, heating arrangements and extrusion pipeline are included, the extrusion pipeline is vertically arranged to extrusion stent, the extrusion pipeline The extrusion passage passed through for linear printed material is inside provided with, the heating arrangements are compassingly set at the lower end of extrusion pipeline, It is characterized in that：Cooling device is further included, the cooling device includes interior cooling body, outer cooling body and fan, described Extrusion stent include installing plate, the lower end of the extrusion pipeline is set through installing plate and with the lower face of installing plate in aliging Put, the outer circulation that the outer cooling body includes being fixed on above installing plate and set around extrusion pipeline and heating arrangements Cricoid external circulation cavity is provided between set, the outer circulation set and heating arrangements and extrusion pipeline, external circulation cavity extension The bottom of external circulation cavity is connected with the external world to installing plate lower face, the central shaft difference of the opposite extrusion pipeline of the fan It is symmetrically disposed in outer circulation jacket wall, the top of external circulation cavity is connected by the fan with the external world, the interior cooling body Including the interior circulating sleeve set in outer circulation set and around extrusion pipeline, the interior circulating sleeve is fixed on heating arrangements Side, is provided with interior torus, the interior circulating sleeve is opened up outer circulation also between the interior circulating sleeve and extrusion pipeline Chamber and the circulation stomata of interior torus unicom, the fan are oppositely arranged with circulation stomata, along perpendicular in the interior torus To several heat transfer partition plates have been placed equidistant with, which is vertically divided into several air-flows by interior torus and divides chamber, institute The circulation stomata stated divides chamber to be correspondingly arranged with each air-flow, and the installing plate is horizontally disposed with regular hexagon, the installing plate Outer circumferential surface is provided with spaced mounting surface, and the shaft of the mounting surface and adjacent mounting surface is provided through on the mounting surface, Each shaft is arranged in equilateral triangle, and the shaft both ends rotate respectively to be provided with swing arm and swing arm is limited in shaft Stop collar.

By using above-mentioned technical proposal, extrusion pipeline is displaced to above installing plate, makes the height higher of lower section material spray, The range of work bigger of institute's printed product, external circulation cavity make the air-flow phase for giving the cooling of discharge pipe lower end equivalent to plenum chamber Parallel to extrusion pipeline and stable, air-flow is flowed out from external circulation cavity bottom, is cooled down through the external world, again the stream at the top of external circulation cavity Enter, and interior torus is quickly cooled to the waste material layer of minimum length, so as to reduce waste material rationally using the air-flow entered in it Contact area between layer and wire printed material, that is, reduce frictional force between the two, avoid causing since frictional force is excessive Obstruction, so as to ensure that the charging for extruding pipeline is happy, pre-set swing arm, driving machine is adapted to without processing extrusion device Structure, swing arm end and existing driving device are linked during installation, have foot between the shaft and installing plate of this spline structure Enough contacts area, ensure installation strength, and a part of heat is conducted by interior circulating sleeve, the gas that another part is produced by fan Stream is circulated in air flow chamber to be conducted, both, which coordinate, is quickly conducted, and accelerates cooling effect.

The present invention is further arranged to：Several heat transfer partition plates have vertically been placed equidistant with the interior torus, should Interior torus is vertically divided into several air-flows and divides chamber by heat transfer partition plate, and the circulation stomata divides chamber is corresponding to set with each air-flow Put.

By using above-mentioned technical proposal, transmission partition plate reduces the volume of air flow chamber, and increase air-flow divides the airflow circulating of chamber Efficiency, and increase the area of metal conduction heat, metal can distribute more heats in the unit interval.

The present invention is further arranged to：Relatively each air-flow of the interior circulating sleeve divide the inner peripheral surface of chamber vertical cross-section be in Raised arcwall face laterally.

By using above-mentioned technical proposal, arcwall face can allow air flow chamber is interior to form helical airflow, make air-flow unit plane Product contact heat exchange area bigger, further increases the efficiency of heat exchange.

The present invention is further arranged to：The shape of described circulation stomata is by the rectangle at middle part and semicircle group of both sides Into the circulation stomata is arranged at interior circulating sleeve outer circumferential surface along interior circulating sleeve is circumferentially equidistant.

By using above-mentioned technical proposal, the semicircle of circulation stomata both sides makes air-flow more sharp due to air-flow in the shape of a spiral In entrance and exclude, and the circulation stomata of this kind of structure also ensure that the lantern ring while aperture area as big as possible is ensured Intensity.

The present invention is further arranged to：The heating arrangements include the heating component in housing and housing, the shell Outer circumferential surface coats thermal insulation material on body, and the housing periphery is provided with the guide surface that guiding air-flow flows vertically to.

By using above-mentioned technical proposal, fan is also used for accelerating cooling required while the printed material of adverse current is cooled down Molding printed material, guide surface ensure that the air-flow that fan is formed will not be directly impacted in half gelatinous printed material, cause to beat It is printed as product precise decreasing.

The present invention is further arranged to：The swing arm includes being provided at both ends with the end of swing arm ring and is threadedly connected to two Bar portion between a end.

By using above-mentioned technical proposal, the i.e. adjustable pendulum arm length of bar portion is replaced, different installation sites is replaced different Length bar portion, it is easy to adjust.

The invention will be further described with reference to the accompanying drawings and detailed description.

Brief description of the drawings

Fig. 1 is the stereogram of the specific embodiment of the invention；

Fig. 2 is the stereogram that the specific embodiment of the invention removes swing arm；

Fig. 3 is the stereogram that pipeline is extruded in the specific embodiment of the invention.

Embodiment

As shown in Fig. 1-3, the invention discloses a kind of swinging mounting printhead, including extrusion device, extrusion device to include Stent 1, heating arrangements 11 and extrusion pipeline 12 are extruded, extrusion pipeline 12 is vertically arranged to extrusion stent 1, extrudes and set in pipeline 12 The extrusion passage passed through for linear printed material is equipped with, heating arrangements 11 are compassingly set at the lower end of extrusion pipeline 12, further include Cooling device, cooling device include interior cooling body, outer cooling body and fan 16, and extrusion stent includes installing plate 13, extrudes Through installing plate 13 and with the lower face of installing plate 13 in setting of aliging, outer cooling body includes being fixed on peace for the lower end of pipeline 12 The top of loading board 13 and the outer circulation set 14 set around extrusion pipeline 12 and heating arrangements 11, outer circulation set 14 and heating arrangements 11 And cricoid external circulation cavity 141 is provided between extrusion pipeline 12, which extends to 13 lower face of installing plate will be outer The bottom of torus 141 is connected with the external world, and the central shaft of the opposite extrusion pipeline 12 of fan 16 is symmetrically arranged in outer circulation Cover in 14 walls, the top of external circulation cavity 141 is connected by fan 16 with the external world, and interior cooling body is included in outer circulation set 14 And the interior circulating sleeve 15 set around extrusion pipeline 12, interior circulating sleeve 15 are fixed on the top of heating arrangements 11, interior circulating sleeve 15 with Interior torus 151 is provided between extrusion pipeline 12, interior circulating sleeve 15 is opened up external circulation cavity 141 and interior torus 151 also The circulation stomata 152 of unicom, fan 16 is oppositely arranged with circulation stomata 152, if being vertically placed equidistant with interior torus 151 Interior torus 151 is vertically divided into several air-flows and divides chamber 154, circulated by dry heat transfer partition plate 153, the heat transfer partition plate 153 Stomata 152 divides chamber 154 to be correspondingly arranged with each air-flow, and the interior relatively each air-flow of circulating sleeve 15 divides the vertical cross-section of the inner peripheral surface of chamber 154 In arcwall face 155 raised laterally, to circulate the shape of stomata 152 by the rectangle 1521 at middle part and the semicircle 1522 of both sides Composition, circulation stomata 152 are arranged at interior circulating sleeve outer circumferential surface along interior circulating sleeve 15 is circumferentially equidistant, and extrusion pipeline 12 is displaced to peace Above loading board 13, make the height higher of lower section material spray, the range of work bigger of institute's printed product, external circulation cavity 141 is equivalent to quiet Case is pressed, the air-flow for making to give the cooling of discharge pipe lower end is more stablized, and interior torus 151 rationally utilizes the gas entered in it Stream, is quickly cooled to the waste material layer of minimum length, so as to reduce connecing between waste material layer and wire printed material and waste material layer Contacting surface is accumulated, that is, is reduced frictional force between the two, avoided causing to block since frictional force is excessive, so as to ensure to extrude pipeline 12 Feed happy, a part of heat is conducted by interior circulating sleeve, and the air-flow that another part fan 16 produces is circulated in air flow chamber and passed Lead, both, which coordinate, is quickly conducted, and accelerates cooling effect, and transmission partition plate reduces the volume of air flow chamber, and increase air-flow divides chamber 154 Airflow circulating efficiency, and increase metal conduction heat area, metal can distribute more heats in the unit interval, and arcwall face can Helical airflow is formed in air flow chamber to allow, and air-flow unit area is contacted heat exchange area bigger, is further increased heat exchange Efficiency, the semicircle of circulation stomata 152 both sides makes air-flow be more conducive to enter and exclude, and this kind due to air-flow in the shape of a spiral The circulation stomata 152 of structure also ensure that the intensity of interior circulating sleeve while aperture area as big as possible is ensured.

Installing plate 13 is horizontally disposed with regular hexagon, and installing plate outer circumferential surface is provided with spaced mounting surface 131, the peace The shaft 132 of the mounting surface 131 and adjacent mounting surface 131 is provided through on dress face 131, each shaft 132 is arranged in equilateral triangle Cloth, 132 both ends of shaft rotate the stop collar 134 for being provided with swing arm 133 and swing arm 133 being limited in shaft, pre-set respectively Swing arm, adapt to driving mechanism without processing extrusion device, when installation links swing arm end and existing driving device , have enough contacts area between the shaft 132 and installing plate 13 of this spline structure, ensure installation strength.

Swing arm 133 includes the bar portion for being provided at both ends with the end 1331 of swing arm ring and being threadedly connected between two ends 1332, the i.e. adjustable pendulum arm length of bar portion is replaced, different length bar portion is replaced in different installation sites, easy to adjust.

Heating arrangements 11 include the heating component in housing 111 and housing, and outer circumferential surface coats thermal insulation material on housing 111, 111 periphery of housing is provided with the guide surface 112 that guiding air-flow flows vertically to, and fan 16 is while the printed material of adverse current is cooled down It is also used for accelerating the molding printed material of cooling required, guide surface 112 ensures that the air-flow that fan 16 is formed will not directly impact and is in Half gelatinous printed material, causes printout precise decreasing.

Claims

1. a kind of swinging mounting printhead, including extrusion device, the extrusion device includes extrusion stent, heating arrangements and squeezes Go out pipeline, the extrusion pipeline is vertically arranged to extrusion stent, is provided with the extrusion pipeline for linear printed material The extrusion passage passed through, the heating arrangements are compassingly set at the lower end of extrusion pipeline, it is characterised in that：Further include cooling dress Put, the cooling device includes interior cooling body, outer cooling body and fan, and the extrusion stent includes installing plate, institute The lower end for the extrusion pipeline stated includes through installing plate and with the lower face of installing plate in setting of aliging, the outer cooling body The outer circulation set for being fixed on above installing plate and being set around extrusion pipeline and heating arrangements, the outer circulation set and heater Cricoid external circulation cavity is provided between structure and extrusion pipeline, which extends to installing plate lower face by external circulation cavity Bottom is connected with the external world, and the central shaft of the opposite extrusion pipeline of the fan is symmetrically arranged in outer circulation jacket wall, institute State fan the top of external circulation cavity is connected with the external world, the interior cooling body includes in outer circulation set and surround to squeeze Go out the interior circulating sleeve of pipeline setting, the interior circulating sleeve is fixed on above heating arrangements, the interior circulating sleeve and extruding pipe Interior torus is provided between road, the interior circulating sleeve opens up the circulating air also by external circulation cavity and interior torus unicom Hole, the fan are oppositely arranged with circulation stomata, and the installing plate is horizontally disposed with regular hexagon, outside the installing plate Side face is provided with spaced mounting surface, the shaft of the mounting surface and adjacent mounting surface is provided through on the mounting surface, respectively The shaft is arranged in equilateral triangle, and the shaft both ends rotate respectively to be provided with swing arm and swing arm is limited in shaft Stop collar, the shape of the circulation stomata are made of the rectangle at middle part and the semicircle of both sides, and the circulation stomata is in Circulating sleeve is circumferentially equidistant to be arranged at interior circulating sleeve outer circumferential surface.

2. swinging mounting printhead according to claim 1, it is characterised in that：It is vertically equidistant in the interior torus Several heat transfer partition plates are provided with, which is vertically divided into several air-flows by interior torus and divides chamber, and described follows Ring stomata divides chamber to be correspondingly arranged with each air-flow.

3. swinging mounting printhead according to claim 2, it is characterised in that：The interior circulating sleeve relatively each air-flow point The vertical cross-section of the inner peripheral surface of chamber is in arcwall face raised laterally.

4. swinging mounting printhead according to claim 1, it is characterised in that：The heating arrangements include housing and shell Internal heating component, outer circumferential surface cladding thermal insulation material on the housing, the housing periphery are provided with guiding air-flow and hang down Direct current to guide surface.

5. swinging mounting printhead according to claim 1, it is characterised in that：The swing arm includes being provided at both ends with pendulum The end of armlet and the bar portion being threadedly connected between two ends.